Absolute Value

Absolute Value: Learn

The absolute value of an integer is the numerical value without regard
to whether the sign is negative or positive. On a number line it is the
distance between the number and zero. Absolute value is also known as
magnitude.

The absolute value of -15 is 15. The absolute value of +15 is 15

The symbol for absolute value is to enclose the number between vertical
bars such as |-20| = 20 and read "The absolute value of negative twenty
equals twenty".